ORLANDO, FL (NEWS10) — We are learning more about the deadly nightclub shooting in Orlando.

A man, who says he was loyal to the terrorist group Isis, is blamed now for the worst gun massacre in our history.

He opened fire in a gay nightclub in Orlando, Florida and killed at least 50 people before police shot him dead.

More than 50 others were wounded and many still in the hospital fighting for their lives.

It is another difficult day ahead for people in Orlando.

Overnight dozens of bodies were taken out of the nightclub and more names of the victims have been released, as investigators remain at the scene trying to gather more information about this horrific crime.

There are more questions about the 29-year-old Omar Mateen, who had been investigated for terrorism by the FBI twice in 2013 and 2014 and was cleared.

Many are asking how he was able to carry out such violence with powerful weapons.